Planning to Build a House

Carl,My wife and I have a goal to build a home in 5 years in northern Utah.We're hoping that gives us some time to save up some cash to have on hand. We know what land we'd like, but don't have the money to do it now. In any case, how early is too early to start planning things? I know material, land, and labor costs change over time so what I find out now, may not be what I get closer to